Cisco OL-4015-08 Manual de usuario descargar pdf (Pagina 663)

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Cross-Platform Release Notes for Cisco IOS Release 12.0S

OL-1617-14 Rev. Q0

Caveats

Resolved Caveats—Cisco IOS Release 12.0(30)S

Depending on the packet size, the buffer leak can occur in different pools.

Conditions: The symptom is observed on a Cisco 10720 in the following two scenarios:

–

An MPLS-enabled interface is the network backbone for L2TPv3 tunnels.

–

An 802.1q interface is the network backbone for L2TPv3 tunnels and an input security ACL

with more than 400 lines is configured on the 802.1q backbone interface.

Workaround: There is no workaround.

• CSCef67267

Symptoms: The Fast ReRoute database shows all prefixes in the active state.

Conditions: This symptom is observed on a Cisco router after a connected point of local repair

(PLR) has rebooted.

Workaround: Enter the shutdown interface configuration command followed by the no shutdown

interface configuration command on the interface on which the primary tunnel is configured. Doing

so restores the prefixes to the ready state.

• CSCef67911

Symptoms: Multicast traffic stops on a PE router that is configured for mVPN.

Conditions: This symptom is observed on a Cisco 12000 series that functions as a PE router when a

default MDT switchover to the data MDT occurs.

Workaround: Clear the VRF mroutes on the affected line card by entering the clear ip mds vrf

vrf-name forwarding command.

• CSCef68324

Cisco Internetwork Operating System (IOS) software is vulnerable to a Denial of Service (DoS) and

potentially an arbitrary code execution attack from a specifically crafted IPv6 packet. The packet

must be sent from a local network segment. Only devices that have been explicitly configured to

process IPv6 traffic are affected. Upon successful exploitation, the device may reload or be open to

further exploitation.

Cisco has made free software available to address this vulnerability for all affected customers.

More details can be found in the security advisory that is posted at

http://www.cisco.com/warp/public/707/cisco-sa-20050729-ipv6.shtml.

• CSCef69146

Symptoms: A Cisco 12000 series crashes when the encapsulation of T1 channels is changed to MFR

during a cut-and-paste operation of the configuration or when you copy from a file to the running

configuration.

Conditions: This symptom is observed on a Cisco 12000 series that runs Cisco IOS

Release 12.0(28)S1 and that is configured with a 1-port channelized OC-12/STM-4 (DS1/E1) ISE

line card when the configuration is changed at a fast pace. When the configuration lines are entered

at a slower pace, the symptom does not occur.

Workaround: Avoid pasting configuration files to the 1-port channelized OC-12/STM-4 (DS1/E1)

ISE line card. If this is not an option, there is no workaround.

• CSCef69631

Symptoms: All line cards may reset and may not enter the “RUN” state after a software OIR or the

primary CSC occurs on a Cisco 12000 series that has 40 GB of fabric.

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